number	op	packagefile	localfile	ucfr	UCF_FORCE_	expected result
1	update	unchanged	unchanged	1			local
2	update	unchanged	changed		1			local
3	update	unchanged	deleted		1			deleted
4	update	changed		unchanged	1			package
5	update	changed		changed		1	CONFFOLD	local
6	update	changed		changed		1	CONFFNEW	package
7	update	changed		deleted		1	CONFFOLD	deleted
8	update	changed		deleted		1	CONFFNEW	package
9	update	deleted		unchanged	0			deleted
10	update	deleted		changed		0	CONFFOLD	local
11	update	deleted		changed		0	CONFFNEW	deleted
12	update	deleted		deleted		0	(*)		deleted
13	rename	unchanged	unchanged	1			newname
14	rename	unchanged	changed		1			changed newname
15	rename	unchanged	deleted		1			oldname and newname deleted
16	rename	changed		unchanged	1			package newname
17	rename	changed		changed		1	CONFFOLD	local
18	rename	changed		changed		1	CONFFNEW	package
19	rename	changed		deleted		1			local
20	rename	changed		deleted		1			package

the column ucfr says how many files should be registered (check_ucfq_number)
after the second ucf run. Tests do also check this.

(*) the second ucf call causes a question to be asked while that it not
strictly necessary. Since both options yield the same result, and this is an
exotic corner case, we can live with that.